Pressure Swing Adsorption  [ Return towards  Equipment  ]

PSA units can be designed to achieve up to 99.9999 % hydrogen purity. Hydrogen recovery can vary between 50 % and over 95 %. The result is a function of the purity of the incoming stream, off-gas pressure and recycling. Operating pressures range between 5 and 50 Bar. Hydrogen is usually recovered with a minimal pressure loss of 1 Bar. AIR LIQUIDE can design units from 100 Nm³/h (85,000 scfd) to 100,000 Nm³/h (85,000,000 scfd).

Typical purification applications in a refinery include:

Catalytic reformer off-gas
Hydrotreater purge gases
Refinery fuel gas stream
Syngas from steam methane reformers
Syngas purification from a partial oxidation unit
Ethylene off-gas (integrated with a refinery)
Styrene off-gas (integrated with a refinery)
Coke oven gas
Ammonia plant off-gas (integrated with a refinery)

We can help you decide on the most appropriate hydrogen purification and recovery technology for your objectives.